Hey Nikola love your work! Guess I should check down here more often, I didn't see this post till today.
Just two questions if I may:
1). Just wondering what you using for your complimentary pre-shading on the underside of your P-51? Is there a complimentary colour for neutral grey? I thought maybe a 'cool' darker grey with some blue added since it's in shadow?
2). I'm hoping to start on a USN F4U Corsair before the end of the year. The colour wheel shows the complimentary colour to the dark navy blue as orange. Not sure how it's going to show under dark blue. I was thinking maybe a dark orange-brown colour for the pre-shading???